Weekly Steam deals: Fireburst, Ducati World Championship, Spectraball

Steam's weekly deals through April 15 are all about burning rubber until the tires catch fire and the ensuing flames engulf all of the surrounding terrain, leaving behind a barren, desolate wasteland. At least, that's the vibe we get from the series of images depicting this week's games, each on sale for up to 75 percent off: PAM: Post Apocalyptic Mayhem, Fireburst, Ducati World Championship, Digital Combat Simulator: Black Shark and Spectraball Extended Edition.